<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style type="text/css">
			div {
				height: 100px;
				background-color: #00FFFF;
				margin-top: 10px;
			}
			
			/* visibility: hidden
				相当于个隐形人，了解即可
				*/
			.div1 {
				visibility: hidden;
			}
			
			.div2 {
				display: none;
			}
			
			.inline-block {
				display: inline-block;
				background-color: red;
				width: 100px;
				height: 100px;
			}
		</style>
	</head>
	<body>
		<div class="div1">
			1
		</div>
		
		<div>
			2
		</div>
		
		<div class="div2">
			3
		</div>
		
		<div>
			4
		</div>
		
		<div style="background-color: green;">
			5
			<div class="inline-block">
				
			</div>
			<div class="inline-block">
				
			</div>
			<span class="inline-block">
				
			</span>
			<span class="inline-block">
				
			</span>
		</div>
	</body>
</html>
